CN204497535U - A kind of micro-motor commutator - Google Patents
A kind of micro-motor commutator Download PDFInfo
- Publication number
- CN204497535U CN204497535U CN201520271138.5U CN201520271138U CN204497535U CN 204497535 U CN204497535 U CN 204497535U CN 201520271138 U CN201520271138 U CN 201520271138U CN 204497535 U CN204497535 U CN 204497535U
- Authority
- CN
- China
- Prior art keywords
- core body
- brush
- micro
- commutation
- commutation core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
The utility model discloses a kind of micro-motor commutator, it comprises pedestal, be rotatably mounted in the commutation core body of described pedestal, the brush arm of one end elastic bending of the cylinder both sides of described commutation core body and conflict in local that is installed on described pedestal, and described brush arm comprises suspension beam type brush pin side by side.Brush arm is transformed to many brush pins side by side, original brush arm is made to change into interrupted Multi-contact with the linear contact lay of commutation core body, namely change into phantom line segments contact from the contact of original straightway, multiple contact position is separated from one another, makes brush pin maintain good elasticity.Therefore, when running up, brush pin shakes with commutation core body and reduces, and decreases and clashes into and friction, thus reduce noise.The minimizing of favorable elasticity and friction can prevent change poles process from producing spark, thus avoids commutator face to burn.
Description
Technical field
The utility model relates to a kind of small and special electric machine, particularly relates to a kind of micro-motor commutator.
Background technology
Micromachine (micro-motor) is that volume, capacity are less, the motor that the purposes of power output generally below hundreds of watts, performance and requirement for environmental conditions are special.Its diameter is generally less than 160mm or rated power is less than 750mW, the miniature specific type of electric machine of full name, is called for short electrical micro-machine.Be usually used in control system, realize the detection of dynamoelectric signal or energy, resolve, amplify, perform or the function such as conversion, or for gearing load, also can be used as the AC and DC power supply of equipment.The type product often has that moment is large, noise is low, volume is little, lightweight, easy to use, run the requirements such as constant speed.
Current electrical micro-machine use traditional change poles method mainly utilizes brush arm, between carbon and commutator core surface copper sheet, linear contact lay has come.After electrical micro-machine energising, under electromagnetic force, produce high speed rotating, by commutator change poles, make motor keep unidirectional continuous motion.
Motor runs up in process, and on the one hand, carbon and copper sheet can produce and periodically contact and separate.Contact and separate moment, minor impact and friction can be produced between carbon and copper sheet, thus cause certain noise (about 48db); On the other hand, traditional commutator core body is formed by phenolic moulding powder and copper sheet die casting, the carbon that its pairing uses is primarily of carbon dust and copper powder composition, because its fluctuation voltage of red metal material is low, in change poles moment, transient voltage change greatly, causes spark, easily to burn commutator face, and produce electromagnetic interference.This can not meet some quietly to require the requirement of the product that high electromagnetic interference is little.
Summary of the invention
For the deficiencies in the prior art, the technical problems to be solved in the utility model is to provide a kind of reduction and commutates friction noise and prevent the micro-motor commutator that change poles process generation spark avoids commutator face to burn.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of micro-motor commutator, it comprises pedestal, be rotatably mounted in the commutation core body of described pedestal, the brush arm of one end elastic bending of the cylinder both sides of described commutation core body and conflict in local that is installed on described pedestal, and described brush arm comprises the brush of the suspension beam type side by side pin of conflicting with commutation core body.
One as the technical scheme of the utility model micro-motor commutator is improved, and described brush needle back has been fitted and connected one sheet type damping bar to the outside of commutation core body.
One as the technical scheme of the utility model micro-motor commutator is improved, and described commutation core body comprises glue core crab, post silver-colored cadmium red copper composite bed in described glue core crab cylinder, and this composite bed comprises red metal basic unit and silver-colored cadmium top layer.
One as the technical scheme of the utility model micro-motor commutator is improved, and described brush dial is provided with silver-colored palladium composite bed to the inner side of commutation core body.
One as the technical scheme of the utility model micro-motor commutator is improved, and described silver-colored palladium bar is welded in described brush pin medial surface.
The beneficial effects of the utility model are: brush arm is transformed to many brush pins side by side, original brush arm is made to change into interrupted Multi-contact with the linear contact lay of commutation core body, namely phantom line segments contact is changed into from the contact of original straightway, multiple contact position is separated from one another, makes brush pin maintain good elasticity.Therefore, when running up, brush pin shakes with commutation core body and reduces, and decreases and clashes into and friction, thus reduce noise.The minimizing of favorable elasticity and friction can prevent change poles process from producing spark, thus avoids commutator face to burn.
Accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram of a kind of micro-motor commutator of the utility model.
Fig. 2 is the perspective view of micro-motor commutator shown in Fig. 1.
Embodiment
Embodiment of the present utility model is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of micro-motor commutator of the utility model, it comprises pedestal, be rotatably mounted in the commutation core body 10 of described pedestal, the brush arm 21 of one end elastic bending of the cylinder both sides of described commutation core body 10 and conflict in local that is installed on described pedestal, and described brush arm 21 comprises the brush of the suspension beam type side by side pin 24 of conflicting with commutation core body 10.Brush arm 21 is transformed to many brush pins 24 side by side, original brush arm 21 is made to change into interrupted Multi-contact with the linear contact lay of commutation core body 10, namely change into phantom line segments contact from the contact of original straightway, multiple contact position is separated from one another, makes brush pin maintain good elasticity.Therefore, when running up, brush pin 24 shakes with commutation core body and reduces, and decreases and clashes into and friction, thus reduce noise.The minimizing of favorable elasticity and friction can prevent change poles process from producing spark, thus avoids commutator face to burn.
More preferably, commutate the dorsad outside of core body 10 of described brush pin 24 has been fitted and connected one sheet type damping bar 22, thus strengthens brush pin 24 and arrange the elasticity of pin and the self-strength of brush pin 24, prevents brush pin 24 plastic deformation from cannot recover.
More preferably, described commutation core body 10 comprises glue core crab 11, post silver-colored cadmium red copper composite bed in described glue core crab 11 cylinder, this composite bed comprises red metal basic unit 13 and silver-colored cadmium top layer 15, and described brush pin 24 is provided with silver-colored palladium composite bed 25 towards the inner side of commutation core body 10.Surperficial for commutator core body 10 copper sheet is replaced by silver-colored cadmium red copper composite bed, brush pin 24 is changed the composite bed composite joint of silver-colored palladium material in brush pin 24 with commutator core body 10 surface contact place, the excellent abrasive resistance of contact position can be ensured on the one hand, on the other hand, improve the arcing voltage value of contact material, not easily produce spark, prevent commutator face from burning, avoid electromagnetic interference.
More preferably, described silver-colored palladium bar 25 is welded in described brush pin 24 medial surface, brush pin 24 is stablized with the contact position of core body and arranges wear-resisting and that arcing voltage value is high conductive metal material securely.
Above disclosedly be only preferred embodiment of the present utility model, certainly can not limit the interest field of the utility model with this, therefore according to the equivalent variations that the utility model claim is done, still belong to the scope that the utility model is contained.
Claims (5)
1. a micro-motor commutator, it is characterized in that: comprise pedestal, be rotatably mounted in the commutation core body of described pedestal, the brush arm of elastic bending of the cylinder both sides of described commutation core body that are installed on described pedestal and conflict in local, one end, described brush arm comprises the brush of the suspension beam type side by side pin of conflicting with commutation core body.
2. micro-motor commutator according to claim 1, is characterized in that: described brush needle back has been fitted and connected one sheet type damping bar to the outside of commutation core body.
3. micro-motor commutator according to claim 1, is characterized in that: described commutation core body comprises glue core crab, post silver-colored cadmium red copper composite bed in described glue core crab cylinder, and this composite bed comprises red metal basic unit and silver-colored cadmium top layer.
4. micro-motor commutator according to claim 1, is characterized in that: described brush dial is provided with silver-colored palladium composite bed to the inner side of commutation core body.
5. micro-motor commutator according to claim 4, is characterized in that: described silver-colored palladium bar is welded in described brush pin medial surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520271138.5U CN204497535U (en) | 2015-04-30 | 2015-04-30 | A kind of micro-motor commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520271138.5U CN204497535U (en) | 2015-04-30 | 2015-04-30 | A kind of micro-motor commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204497535U true CN204497535U (en) | 2015-07-22 |
Family
ID=53576824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520271138.5U Expired - Fee Related CN204497535U (en) | 2015-04-30 | 2015-04-30 | A kind of micro-motor commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204497535U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864496A (en) * | 2020-08-27 | 2020-10-30 | 和平长盛电机有限公司 | Novel commutator of noise-reduction micromotor and electric brush assembly of novel commutator |
-
2015
- 2015-04-30 CN CN201520271138.5U patent/CN204497535U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864496A (en) * | 2020-08-27 | 2020-10-30 | 和平长盛电机有限公司 | Novel commutator of noise-reduction micromotor and electric brush assembly of novel commutator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204844190U (en) | Manipulator is got to electric spare part clamp | |
| CN105826094B (en) | A kind of adaptive heavy DC switch | |
| CN204497535U (en) | A kind of micro-motor commutator | |
| CN207542087U (en) | A kind of novel cambered surface suitable for break group contacts left and right contact strip | |
| CN202586654U (en) | Series motor | |
| CN209200872U (en) | A kind of reliable motor of commutation | |
| CN208363499U (en) | A kind of permanent magnet generator floor | |
| CN201252047Y (en) | Movable end connecting structure for sealed high-pressure vacuum breaker | |
| CN203312192U (en) | DC contactor | |
| CN203632427U (en) | Surface contact carbon brush device with propulsion function | |
| CN204442058U (en) | Direct current machine | |
| CN203119260U (en) | Carbon brush holder | |
| CN202307673U (en) | AC high pressure vacuum contactor | |
| CN201656215U (en) | Novel collecting ring | |
| CN204633102U (en) | Commutator | |
| CN207646314U (en) | A kind of terminal plated conductive seat | |
| CN205122962U (en) | Power carbon brush | |
| CN204517617U (en) | A kind of preventing oil pollution electrical micro-machine | |
| CN216134070U (en) | Electric brush structure for gantry crane sliding contact power supply | |
| CN209001757U (en) | A kind of motor sliding ring component | |
| CN201821224U (en) | Commutation structure of disc type permanent magnet motor | |
| CN118472733A (en) | Contact finger slip ring | |
| CN202394798U (en) | Side-installed type vacuum circuit breaker | |
| CN107680837A (en) | A kind of new cambered surface suitable for break group contacts left and right contact strip | |
| CN202954106U (en) | Conductive copper bar of electrolytic copper powder positive plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20160430 |